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Mitigating wavefront error caused by sky subcooling of the ELT structure 减轻了ELT结构天空过冷引起的波前误差
Ground-based and Airborne Telescopes VIII Pub Date : 2020-12-13 DOI: 10.1117/12.2563285
R. Holzlöhner, M. Brinkmann
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引用次数: 0
Time and frequency distribution for NGVLA NGVLA的时频分布
Ground-based and Airborne Telescopes VIII Pub Date : 2020-12-13 DOI: 10.1117/12.2563159
B. Shillue
{"title":"Time and frequency distribution for NGVLA","authors":"B. Shillue","doi":"10.1117/12.2563159","DOIUrl":"https://doi.org/10.1117/12.2563159","url":null,"abstract":"The ngVLA reference design calls for a main array of 214 18-meter antennas, as well as a small baseline array of 19 6-meter antennas, and a long baseline array of 30 additional 18-meter antennas. The requirements for the ngVLA time and frequency distribution will be reviewed, and a design for the distribution of accurate time and frequency references to antennas stations for effective millimeter wave radio astronomy observing will be presented. This will include details of the central signal generation, the fiber infrastructure and signal distribution, and the low-phase-noise local oscillator design for the antenna stations.","PeriodicalId":381085,"journal":{"name":"Ground-based and Airborne Telescopes VIII","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124454660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
DREAMS telescope: opto-mechanical design DREAMS望远镜:光机械设计
Ground-based and Airborne Telescopes VIII Pub Date : 2020-12-13 DOI: 10.1117/12.2562980
T. Travouillon, A. Moore, J. Soon, A. Galla, D. Adams, J. Hart, B. Taylor
{"title":"DREAMS telescope: opto-mechanical design","authors":"T. Travouillon, A. Moore, J. Soon, A. Galla, D. Adams, J. Hart, B. Taylor","doi":"10.1117/12.2562980","DOIUrl":"https://doi.org/10.1117/12.2562980","url":null,"abstract":"The DREAMS telescope is currently under construction at the Siding Spring Observatory. Once completed, the 0.5m telescope will be the fastest infrared surveyor in the southern hemisphere and one of the best tool available for transient astronomy. The Opto-mechnical design is fully custom and consists of two distinct sections: The telescope tube assembly and the instrument optical relay that feeds the light into six InGaAs cameras. We present here, the details of the mechanical design of the telescope.","PeriodicalId":381085,"journal":{"name":"Ground-based and Airborne Telescopes VIII","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130077420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The Leighton Chajnantor Telescope: Project update and mechanical structural analysis in preparations for new deployment in Chajnantor, Chile 雷顿查南托望远镜:项目更新和机械结构分析，为智利查南托的新部署做准备
Ground-based and Airborne Telescopes VIII Pub Date : 2020-12-13 DOI: 10.1117/12.2562278
J. Vial, D. Arroyo, C. Canales, J. Navarro, R. Reeves, Emilio Dufeu, S. Golwala, G. S. Parks, D. Woody, Liu Jinpeng, Zhao Jin-biao, Ma Yong
{"title":"The Leighton Chajnantor Telescope: Project update and mechanical structural analysis in preparations for new deployment in Chajnantor, Chile","authors":"J. Vial, D. Arroyo, C. Canales, J. Navarro, R. Reeves, Emilio Dufeu, S. Golwala, G. S. Parks, D. Woody, Liu Jinpeng, Zhao Jin-biao, Ma Yong","doi":"10.1117/12.2562278","DOIUrl":"https://doi.org/10.1117/12.2562278","url":null,"abstract":"The LCT project aims to refurbish the CSO telescope, move it from Maunakea to Chajnantor, in Chile, and operate it scientifically for 10 years. The relocation of the telescope involves a variety of changes in the working conditions, which demands in-depth mechanical analysis. To conduct the required studies, an FEM model of the entire telescope has been developed, together with CFD tools. This paper introduces the LCT project, presents the full-FEM model, its validation, and the first steps towards these analyses. Preliminary results of the simulations of the telescope, considering the working conditions at the Plateau, are also shown.","PeriodicalId":381085,"journal":{"name":"Ground-based and Airborne Telescopes VIII","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124874379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The ngVLA: Reference design update ngVLA:参考设计更新
Ground-based and Airborne Telescopes VIII Pub Date : 2020-12-13 DOI: 10.1117/12.2559593
R. Selina, M. McKinnon, E. Murphy, Rick Farnsworth
{"title":"The ngVLA: Reference design update","authors":"R. Selina, M. McKinnon, E. Murphy, Rick Farnsworth","doi":"10.1117/12.2559593","DOIUrl":"https://doi.org/10.1117/12.2559593","url":null,"abstract":"The ngVLA is envisaged as an interferometric array with ten times greater sensitivity and spatial resolution than the current VLA and ALMA, operating in the frequency range of 1.2 – 116 GHz.\u0000\u0000In this talk we provide a project status update and overview of the Reference Design. The Reference Design is a low-technical-risk, costed concept that supports the key science goals for the facility, and forms the technical and cost basis of the ngVLA Astro2020 Decadal Survey proposal.","PeriodicalId":381085,"journal":{"name":"Ground-based and Airborne Telescopes VIII","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132865908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FIREBAll-2 thermal control system: Performance of the 2018 flight and improvements for 2021 火球-2热控系统:2018年飞行性能和2021年改进
Ground-based and Airborne Telescopes VIII Pub Date : 2020-12-13 DOI: 10.1117/12.2561974
Zeren Lin, G. Kyne, B. Milliard, H. Pham, K. Hoadley, D. C. Martin, D. Schiminovich, E. Hamden, S. Nikzad, V. Picouet
{"title":"FIREBAll-2 thermal control system: Performance of the 2018 flight and improvements for 2021","authors":"Zeren Lin, G. Kyne, B. Milliard, H. Pham, K. Hoadley, D. C. Martin, D. Schiminovich, E. Hamden, S. Nikzad, V. Picouet","doi":"10.1117/12.2561974","DOIUrl":"https://doi.org/10.1117/12.2561974","url":null,"abstract":"","PeriodicalId":381085,"journal":{"name":"Ground-based and Airborne Telescopes VIII","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127940134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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